【摘要】 本文研究了由非离子型表面活性剂、水、甲苯和醇所组成的微乳液,发现醇的烃链上碳原子数直接与热力学函数成线性关系,氧乙烯基团数与自由能、焓以及熵的对数值亦成线性关系。这些结果对研究微乳液的构成和稳定性很有意义。更多还原

【Abstract】 The Microemulsions composed of nonionic surfactants are a quaternary mixtures consisting of polyphenol oxyethlene ethers, oil (toluene), water and alcohol (hexanol). The systems were studied thermodynamically by means of dilution to determine the standard free energy for alcohol to tranfer from the oil phase to the interfacial region. From the effects of temperature, the entropy and enthalpy were calculated. The effect of chain length of the alcohol is described. It is found that the thermodynamic functions change linearly with the increase of the number of carbons (? in the alcohol, which can be described as - AGs→i0=6860+224n(35℃)△Hs→i0 = 92300 - 6700n and △6Ss→i0 = 321 - 21n.The relationship between the thermodynamic quantities and the oxyethylene unit number (n) of the surfactants were determined as更多还原